PCI: OF: Don't crash when bridge parent is NULL.
authorDavid Daney <david.daney@cavium.com>
Tue, 16 Aug 2011 18:24:37 +0000 (11:24 -0700)
committerJesse Barnes <jbarnes@virtuousgeek.org>
Fri, 19 Aug 2011 15:51:37 +0000 (08:51 -0700)
commit69566dd8be42dea7a22f625abc96e65bb4b45d1f
tree48e73a52bd8b79b5b8674243b54b5f2e346e5b9b
parentdebc3b778508f59696ff188f0feca271dcbfa7d9
PCI: OF: Don't crash when bridge parent is NULL.

In pcibios_get_phb_of_node(), we will crash while booting if
bus->bridge->parent is NULL.

Check for this case and avoid dereferencing the NULL pointer.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
drivers/pci/of.c